Add C# artifacts to .gitignore for multi-language-repo
#7633
| Job | Run time |
|---|---|
| 1m 42s | |
| 1m 41s | |
| 3m 23s |
.gitignore for multi-language-repo
#7633
| Job | Run time |
|---|---|
| 1m 42s | |
| 1m 41s | |
| 3m 23s |